Cylinder locks having plates

Details Cylinder locks having plates Cylinder locks having plates

1976-09-15

1978-02-21

Wolfe, Robert L.

Locks

Operating mechanism

Key

70377, 70417, E05B 2902

Patent

active

040745511

ABSTRACT:
A cylinder lock which has a cylindrical barrel provided with radially slidable plates elastically biased to project from said barrel into at least one groove in the body of the lock. Said plates project slightly from the barrel in the position to which said plates are returned inside the barrel by the key of the lock, whereby picking of the lock is made more difficult.

REFERENCES:
patent: 1725557 (1929-08-01), Baird
patent: 1960263 (1934-05-01), Fitzgerald
patent: 1964963 (1934-07-01), Shinn
patent: 2094716 (1937-10-01), Palmer
patent: 2667785 (1954-02-01), Opocensky
patent: 3499209 (1970-03-01), Laviana
patent: 3854311 (1974-12-01), Mercurio
patent: 3969915 (1976-07-01), Droske

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